What are medioroids?

What is a gas butterfly valve? Are ant feces toxic to humans? What is mitichondirion? Are bees a pest? I was told i have a computer bug called a fly I have never heard of such a thing and cannot find what it is on the internet what is it? Is there worm living inside us? Do arachnids have exoskeleton? Can praying mantis bite people? What is the Portguese 'herbicida' in English? How do mealworms communicate? What is the niche of a grasshopper? When unloading grain from a storage bin a worker can be in a dangerous situation within? How can you tell that a leech is female and male? What leaves that caterpillar feed on? Are glow worms endangered? What is the different body plan symmetry and feeding methods of cnidarians and roundworms? What are some of the aquatic plants in the ocean? How does a bee collect pollen? What hunts sea cucumbers? What is the purpose of the grasshopper mandible?